580E - Ethernet Modbus TCP to 32 Isolated Dry-Contact Inputs (SeaI/O-580E)

Lifetime Warranty

This product has a lifetime warranty against product failure (excludes user or enviromental damage).

Wide Temperature

These products utilise high quality industrial grade components enabling them to work in wide temperature environments. They are capable of running as low as -20C and as high as +70C.

Wide Voltage

These devices and systems have been designed to accept a wide voltage DC power input. This feature is desirable in the industrial market where a fixed voltage level or mains AC power cannot be guaranteed.


This product fully adheres to the Restriction of Hazardous Substances Directive 2002/95/EC, RoHS for short.  The directive covers the restriction of use of certain hazardous substances in electrical and electronic equipment and was adopted in February 2003 by the European Union.


CE is a mandatory standard for products on the market in the European Economic Area. By CE marking a product, the manufacturer ensures that the item meets the essential safety requirements set out in the applicable CE directive.

FCC Approved

The Federal Communications Commission (FCC) is an independent agency of the United States government that sets standards and governs the testing of conducted and radiated emissions such as EMI.

580E Ethernet to Dry-contact Adapter
580E front580E side
Featured in:SeaI/O Ethernet Adapters

Request a quote for this product

Enquiry information  
Your name  
Company name  
Email address  

Add to quote list

Add the 580E to your quote list to send to our sales team for a quote on all your chosen products

Ethernet Modbus TCP to 32 Isolated Dry-Contact Inputs (SeaI/O-580E)


Expansion and Strap Kit - for SeaI/O, Relio R1100 Systems

2 in stock
Next day delivery i

120V AC to 24V DC @ 500mA Wall Mount Power Supply


SeaI/O 100-240V AC to 24V DC @ 1A, International Wall Mount Power Supply


90-265V AC to 5V/12V DC 165W Power Supply - (Requires Power Cord)


RS-485 Interconnect Cable, 5" in Length - for SeaI/O, Relio R1100 Systems


CAT5 Patch Cable, 7' in Length - Blue


CAT5 Patch Cable, 10' in Length - Blue


Universal Mounting Bracket (VESA) - for SeaI/O, Relio R1000 Systems


Side Mount Bracket Kit - for SeaI/O, Relio R1000 Systems


Flush Mount Bracket Kit - for SeaI/O, Relio R1000 Systems


Terminal Blocks - SeaI/O Spring Clamp Upgrade Kit


CAT5 Crossover Cable, 7' in Length - Yellow


DIN Rail Mounting Clips - for SeaI/O, R1100, 4103

* Lead time is indicative and is subject to change at time of ordering. Next business day delivery on in-stock products only (when ordered before 3pm).
** Contact us for quantity or project pricing.
† Additional delivery charge may be incurred for certain postcodes (calculated at checkout)
Industry insight.
Network know-how.
Impulse engineers and specialists have the industry insight and network know-how to design forward looking solutions for wide-ranging environments.
Discover our Industrial IoT capabilities

580E overview

  • 10/100BaseT Ethernet Modbus TCP interface
  • 32 optically isolated, dry contact inputs
  • Removable 3.5mm screw terminals simplify field wiring
  • Input power via terminal block or modular connector
  • Status indicator LEDs for communication, fault, and power
  • DIN-rail mount or table mount
  • Easily daisy chain up to 247 units
  • Sealevel SeaMAX software supports Microsoft Windows and Linux operating systems
  • 0°C to +70°C operating temperature
  • Includes 7" CAT5 Ethernet cable (Item# CA246-ROHS) and 7' CAT5 Crossover cable (Item# CA251-ROHS)
Control and monitor 32 isolated, dry contact inputs via any 10/100BaseT Ethernet connection with the SeaI/O-580E. The inputs detect a contact closure between two externally wired field contact points. The dry contact (no-voltage) inputs are ideal for monitoring applications such as alarm contacts, HVAC controls, demux boards, sensing relay contacts, and other control system inputs.

I/O connections are made using convenient 3.5mm field removable screw terminal connectors. Field wiring is simplified since no external power is required to trigger the inputs. The SeaI/O-580E is powered from your 9V to 30V DC source, or select from a variety of Sealevel power supply options.

Communicate with the SeaI/O-580E using industry standard Modbus TCP protocol or use the Sealevel SeaMAX API software libraries from your application program. Sealevel's SeaMAX software drivers and utilities make installation and operation easy using Microsoft Windows and Linux operating systems.

The Sealevel Modbus Connect app for iOS allows you to access the registers, coils and discrete I/O of your Sealevel Modbus devices and is available on the App Store. Use the app to remotely access I/O in the field or for testing and troubleshooting during application development.

Impulse is the exclusive UK distributor of Sealevel products and can supply you the 580E along with a wide range of industrial computing and communication products.

For more information about the 580E, please contact our technical sales team on +44 (0)1782 337 800, or alternatively submit an enquiry.
Enquire about the 580E
Need more info or project pricing for the 580E?
T: +44 (0)1782 337 800 • E: sales@impulse-embedded.co.uk
+44(0)1782 337 800
STOCK ALERT!Rack PCs, Embedded Box PCs, SBCs, and IIoT devices in stock and ready to ship.
Andrew .
Very helpful in sourcing the kit required and arrived when it was required.
Sep 2021
+44(0)1782 337 800